Lists of scammers are always welcome. But no one should be making scammer accusations without proper evidence. Suspicions are not enough. A proposition below price isn't ground to trash publicly the reputation of someone.
I wholeheartedly agree, that's why I haven't added the person in question to the list.
This is not necessarily a scammer list though, just a beware/take caution.
use an escrow service to avoid scammers.
what's escrow? 
You send BTC to escrow, other person sends LTC to escrow, escrow sends you LTC and him BTC.
The person might charge a fee.
It's not necessary for the escrow provider to touch both sides of the trade if delivery of one or the other side of the trade can be established beyond doubt.
So for example:
Buyer sends payment to escrow
Escrow tells seller payment is received
Seller sends LTC to buyer
Buyer tells escrow that goods are received
Escrow releases funds to seller
Given that the block chain can track all steps here, the chances of someone scamming and convincing the escrow to release funds to the wrong party are small to nonexistent.
Ah but if there was no block chain you'd have to trust the buyer to tell escrow to release.
I see your point though.